fix(changelog): Added changelog creation to grunt task chain

Author: tombatossals

grunt/conventionalChangelog.json

@@ -0,0 +1,7 @@
+{
+  "options": {
+    "changelogOpts": {
+      "preset": "angular"
+    }
+  }
+}

package.json

@@ -1,7 +1,7 @@
 {
   "author": "https://github.com/tombatossals/angular-leaflet-directive/graphs/contributors",
   "name": "angular-leaflet-directive",
-  "versoin": "0.10.1",
+  "version": "0.10.1",
   "description": "angular-leaflet-directive - An AngularJS directive to easily interact with Leaflet maps",
   "homepage": "http://tombatossals.github.io/angular-leaflet-directive/",
   "repository": {
@@ -23,6 +23,7 @@
     "grunt-contrib-jshint": "^0.11.2",
     "grunt-contrib-uglify": "^0.10.0",
     "grunt-contrib-watch": "^0.6.1",
+    "grunt-conventional-changelog": "^5.0.0",
     "grunt-graphviz": "^0.1.1",
     "grunt-jscs": "^2.3.0",
     "grunt-karma": "^0.12.1",